“Atezolizumab therapy produced a 22% objective response rate in first-line treatment, 19% in second-line, and 18% in third-line or higher in patients with PD-L1 expression on ≥ 5% of tumor cells (TC) or tumor-infiltrating immune cells (IC), according to Enriqueta Felip, MD, PhD, of Vall d’Hebron University Hospital in Barcelona, Spain, and colleagues. Patients with the highest levels of PD-L1 expression — TC3 or IC3 — had better objective response rates: 31% in first-line, 26% in second-line, and 27% third-line or higher.”